CVE-2026-53611Critical· 9.8▾ Midnight

Looking Glass is a modern, stateless network-diagnostic platform — a single self-contained Go binary that fronts a fleet of routers over SSH and exposes ping / traceroute / BGP lookups through a gRPC (ConnectRPC) API, an embedded SvelteK…

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score54/ 100 · Moderate

impact 53.9 · likelihood 0.4 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

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Published

Sep 2, 2026

Updated

Sep 9, 2026

CVSS

9.8

Vendor

—

Product

—

CWE

CWE-78

Depth score

54 · Moderate

EPSS

2.0% · p80

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS history

Exploit-prediction probability, daily snapshots since Sep 9.

1.0% → 2.0%▲ 0.9%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 23 days

Sep 2, 2026Published
Disclosed via NVD
Sep 9, 2026Record revised
Last analysed / modified upstream
Sep 9, 2026EPSS first tracked
1.0%
Sep 25, 2026EPSS peak
1.0% → 2.0%

CWE-78 #nvd

Full technical detail▾

Overview

Looking Glass is a modern, stateless network-diagnostic platform — a single self-contained Go binary that fronts a fleet of routers over SSH and exposes ping / traceroute / BGP lookups through a gRPC (ConnectRPC) API, an embedded SvelteKit web UI, and a lg-cli client. Prior to version 1.3.5, there is an OS Command Injection vulnerability resulting from an unanchored regular expression in the input validation layer. This issue has been patched in version 1.3.5.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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